docstr: Sets the marker opacity. The default value is `1` (fully
  opaque). If the markers are not fully opaque and there are
  hundreds of thousands of points, it may cause slower zooming
  and panning. Opacity fades the color even if `blend` is left on
  `false` even if there is no translucency effect in that case.
  
  The 'opacity' property is a number and may be specified as:
    - An int or float in the interval [0, 1]
  
  Returns
  -------
  int|float
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code: def opacity(self):
      """
      Sets the marker opacity. The default value is `1` (fully
      opaque). If the markers are not fully opaque and there are
      hundreds of thousands of points, it may cause slower zooming
      and panning. Opacity fades the color even if `blend` is left on
      `false` even if there is no translucency effect in that case.
  
      The 'opacity' property is a number and may be specified as:
        - An int or float in the interval [0, 1]
  
      Returns
      -------
      int|float
      """
      return self["opacity"]
  
file_path: catboost/contrib/python/plotly/py2/plotly/graph_objs/pointcloud/_marker.py
imports: from plotly.basedatatypes import BaseTraceHierarchyType
  import copy
label_desc: Use image node_id 7 for calling the Marker obj's underlying member method code with example usage: obj.opacity() and returns: self